Locking system for adjustable luggage carrier

Abstract: A vehicle article carrier having a locking mechanism (46) disposed within a bracket member (20). The locking mechanism (46) includes an actuating member (32) having first and second camming surfaces (86,88), a locking pin (50) and a clamping member (64). As the actuating member (32) is moved to an unlocked position, the first camming surface (86) cooperates with the locking pin (50) to urge the locking pin out of engagement with an aperture (44) in a channel of a support member of the vehicle article carrier. Simultaneously, the second camming surface (88) causes the clamping member (64) to be moved out of clamping engagement with shoulder portions (42) of the channel member. When the actuating member (32) is moved from the unlocked to the locked position, the first camming surface (86) allows a first spring (52) to urge the locking pin (50) back into engagement with the aperture (44) in the channel member. Simultaneously, the rotation of the actuating member (32) causes the second camming surface (88) to allow the clamping member (64) to be urged back into clamping engagement in response to a biasing force provided by another spring (54). Accordingly, a dual locking and unlocking action is provided with movement of a single actuating member.

Description: This invention relates to vehicle article carriers, and more particularly to a locking mechanism for a bracket member for adjustably, releasably securing the bracket member and a cross bar attached thereto at a plurality of locations along a support member. Vehicle article carriers are used on a wide variety of vehicles to support and transport cargo and other items, where such items are either too large to fit in an interior area of the vehicle or otherwise more conveniently transported on the outside of the vehicle. In such vehicle article carrier systems, a pair of support members is typically employed. Each support member is secured to an outer body vehicle surface such as a roof of the vehicle and positioned longitudinally along the roof portion of the vehicle such that each extends from the front of the vehicle to the rear of the vehicle along outermost side portions of the vehicle roof. Such systems typically further employ some form of bracket member which may be slidably, releasably disposed along each of the support members. The bracket members are typically secured to a cross bar extending therebetween for supporting cargo or other like items above the vehicle body roof or for helping to secure cargo or other like items to the vehicle body roof via straps, cords or other like implements. In the latter case, one or more elongated support strips may be secured to the vehicle body surface between the support members to prevent the outer body vehicle surface from becoming scratched, marred or otherwise damaged by the cargo. For allowing each of the bracket members, and thus the cross bar, to be positioned at a desired location along the support members, each bracket member typically includes some form of locking device for cooperating with the support member to secure the bracket member releasably at various positions along the length of each support member. In addition, some form of actuating means is typically incorporated to enable the locking device within each bracket member to be released from locking engagement, to thereby permit adjustment of each bracket member along its associated support member, and to allow each bracket member to be locked at a desired position. Patents involving vehicle article carrier systems and disclosing various forms of novel and non-obvious actuating mechanisms are disclosed in, for example, U.S. patent numbers 4,684,048, 4,754,905 and 4,972,983, each to John A. Bott. While the vehicle article carrier systems disclosed in the above-mentioned patents have each proven to be a significant success, it would nevertheless be desirable to provide a bracket member having a locking mechanism therein which even more positively operates to secure a bracket member to a support member. WO-A-90/03288 discloses a vehicle article carrier in accordance with the preamble of claim 1. According to the present invention there is provided a vehicle article carrier comprising: a pair of support members for extending longitudinally along and fixed securement to an outer body vehicle surface; a bracket member disposed on at least one of said support members; a cross bar secured to said bracket member such that movement of said bracket member along said one support member allows said cross bar to be adjustably positioned relative to said support members; said bracket member including locking means for releasably securing said bracket member to said one support member at a selected position along the length of said one support member; said locking means including: actuating means having a manually graspable portion and a first camming surface; and locking pin means; said locking pin means being movable into locking engagement with said one support member when said actuating means is moved into a locked position; and said locking pin means being movable out of said locking engagement with said one support member by said first camming surface when said actuating means is moved to an unlocked position; characterised in that: said actuating means has a second camming surface; said locking means further comprises clamping member means; said clamping member means is movable into clamping engagement with said one support member when said actuating means is moved to said locked position; and said clamping member means is moveable out of said clamping engagement with said one support member by said second camming surface when said actuating means is moved to said unlocked position. The vehicle article carrier according to the present invention includes a pair of support members. In use, these support members are fixedly secured to an outer body vehicle surface of a vehicle. The carrier further comprises a pair of bracket members releasably, adjustably securable to each of the support members, and a cross bar extending between the bracket members for supporting cargo and other like items above the outer body vehicle surface. In the preferred embodiment each of the support members includes a channel formed therein having a plurality of spaced apart apertures in a wall portion thereof and at least one inwardly extending shoulder portion. Each bracket member further includes locking means therein which comprises a locking pin and a clamping member. The locking pin and clamping member are disposed in operable relationship with an actuating member having a first camming surface and a second camming surface. In the preferred embodiment the actuating member includes a manually graspable end portion which fits compactly against an inner side of the bracket member when the actuating member is in the locked position. Accordingly, the actuating member has the appearance of being an integrally formed component with the bracket member when in the locked position. The various advantages of the present invention will become apparent to one skilled in the art by reading the following specification and subjoined claims and by referencing the following drawings in which: Figure 1 is a perspective view of a vehicle article carrier in accordance with a preferred embodiment of the present invention; Figure 2 is an elevational view of an inside portion of one of the bracket members shown in Figure 1 taken in accordance with section line 2-2 in Figure 1; Figure 3 is a cross sectional side view of the bracket of Figure 2 as taken in accordance with section line 3-3 in Figure 2; Figure 4 is a perspective view of the clamping member of the present invention shown in Figure 3; Figure 5 is a bottom view of the bracket member of Figure 3; Figure 6 is a fragmentary perspective view of the actuating member of the present invention; Figure 7 is a bottom view of the actuating member of Figure 6 showing the actuating member upside down (i.e., rotated 180 degrees) to more positively illustrate the second camming surface thereof; Figure 8 is a cross sectional view of the apparatus in accordance with section line 8-8 of Figure 3 while the bracket member is in its locked position relative to the support member; Figure 9 is a view of the apparatus as shown in Figure 3 with the exception that the bracket member is shown in its unlocked position; Figure 10 is a cross sectional view of the locking means of the bracket member shown in Figure 9 is accordance with section line 10-10 in Figure 9; Figure 11 is a top view of the locking mechanism of Figure 3; Figure 12 is a cross sectional view of an alternative preferred retaining member of the present invention; Figure 13 is a cross sectional view of another alternative preferred retaining member of the present invention; Figure 14 is a top view of the retaining member of Figure 13; and Figure 15 is yet another alternative preferred retaining member of the present invention. Referring to Figure 1, there is shown a vehicle article carrier 10 in accordance with a preferred embodiment of the present invention. The vehicle article carrier 10 generally comprises a pair of elongated, longitudinally extending support members 12 fixedly secured to an auto body vehicle surface 14 of a vehicle 16, a fixed cross bar 18, a pair of bracket members 20 releasably, adjustably coupled to the support members 12, and an adjustable cross bar 22 extending between the bracket members 20 and coupled at its outermost ends to each of the bracket members 20. The vehicle article carrier 10 allows luggage or other like items to be supported above the outer body vehicle surface 14 on the adjustable cross bar 22 and the fixed cross bar 18. Since the adjustable cross bar 22 may be moved longitudinally along the support members 12 via the bracket members 20, a wide variety of differently shaped articles of varying size may be transported on the cross bars 18 and 20 when suitable straps, cords or other like implements are used to secure such articles to the cross bars 18 and 22. Referring to Figure 2, one of the bracket members 20 is shown in greater detail. Initially, it should be understood that the bracket members 20 are preferably identical to each other (i.e., mirror images of each other). The bracket member 20 shown in Figure 2 comprises a housing 24 having a recessed portion 26 on an inner surface 28 thereof. The recessed portion 26 is shaped to accommodate a manually graspable end portion 30 of an actuating member 32 such that the end portion 30 is housed within the recessed portion 26 to provide the appearance of a single, integrally formed structure when the actuating member 32 is in a locked position, as shown in Figure 2. Referring now to Figure 3, the bracket member 20 of Figure 2 is shown releasably, adjustably coupled to an associated one of the support members 12, in cross section, to more fully illustrate the internal components and inter-working relationship of the bracket member 20 and the support member 12. Beginning with the support member 12, an upwardly opening channel 34 is formed therein. The channel 34 holds a channel member 36 having a bottom wall portion 38, a pair of side portions 40 and a pair of inwardly extending shoulder portions 42. The bottom wall portion 38 and the inwardly extending shoulder portions 42 are further formed so as to be disposed generally parallel to the outer body vehicle surface 14. The bottom wall portion 38 further includes a plurality of apertures 44 (only one of which is visible in Figure 3). Turning now to the bracket member 20, a locking mechanism 46 is housed therein. The locking mechanism 46 is generally comprised of the actuating member 32, a clamping member 48, a locking pin 50, first biasing means in the form of a first spring 52 for biasing the locking pin 50 between a locked and an unlocked position within one of the apertures 44, and second biasing means in the form of a second spring 54 for biasing the clamping member 48 between clamped and unclamped positions. The locking mechanism 46 further includes an annular retaining member 56 and a first retaining pin 58. The clamping member includes a neck portion 60 having an upper end portion 62, and clamping portions 64. The retaining pin 58 is disposed within an aperture 61 in the upper end portion 62 and is biased upwardly in the drawing of Figure 3 by the second spring 54 and the annular retaining member 56, thereby tending to urge the clamping member 48 upwardly such that the clamping portions 64 are urged into clamping engagement with the shoulder portions 42 of the channel member 36. The bracket member 20 includes a bottom portion 27 having an opening 27a therein. The opening 27a allows a portion of the neck portion 60 of the clamping member 48 to extend therethrough. With further reference to Figures 3 and 11, the locking mechanism 46 further includes a second retaining pin 66 which is disposed within a bore 51 in the locking pin 50 generally transversely of the locking pin 58, and within a longitudinally extending slot 68 formed in the neck portion 60 of the clamping member 48. Also formed in the neck portion 60 is a concentrically positioned bore 70 which extends completely through the clamping member 48. The locking pin 50 is disposed concentrically within the bore 70 (as is the first spring 52) and moves slidably longitudinally therein with and against the biasing force provided by the first spring 52. The locking pin 50 is further of a length such that an outermost end portion 72 extends into the aperture 44 when the retaining pin 66 is biased towards the lowermost portion of the elongated slot 68 as shown in Figure 3. Referring briefly to Figure 4, the clamping member 48 by itself is shown. From Figure 4 it can be seen that the clamping member 48 also includes a pair of upwardly extending arm portions 74 integrally formed with the clamping portions 64. Each arm portion 74 further includes an upper end portion 74a having a rounded surface. With reference to Figure 5, the bottom portion 27 of the bracket member 20 includes a pair of foot portions 76 which protrude outwardly therefrom. Each foot portion 76 includes a guide portion 78 which is adapted to slidably maintain the clamping portions 64 of the clamping member 48 in a desired orientation relative to the bottom portion 27, and further to prevent rotation of the clamping member 48. The foot portions 76 provide the added benefit of helping to guide the bracket member 20 along the support member 12 as each foot portion 76 is of a width to enable it to fit between the inwardly extending shoulder portions 42 (Figure 3) and reside partially within the interior of the channel member 36, to thus help guide the bracket member 20 as same is moved longitudinally along the support member 12. Referring now to Figure 6, the actuating member 32 is shown. The actuating member 32 includes the manually graspable end portion 30 (of which only a portion is shown in Figure 6), an annular main body portion 80 having an annular recessed portion 82, a bore 84, a first camming surface 86 and a second camming surface 88. The annular recessed portion 82 is adapted to hold a portion of the second spring 54 therein (as seen in Figure 3). The bore 84 allows the clamping member 48 to extend therethrough and to allow the actuating member 32 to be rotated relative to the clamping member 48. The first camming surface 86 further includes a pair of sloped first camming portions 86a having lowermost portions 86b. Referring briefly now to Figure 7, the second camming surface 88 is shown in more detail. The second camming surface 88 includes a pair of camming surfaces 88a which slope relative to a flat bottom surface 90 portion, which rests on an inner surface of the bottom portion 27 of the bracket member 20. The flat bottom surface 90 allows the actuating member 32 to be rotated relative to the bottom portion 27 of the bracket member 20 by the manually graspable end portion 30. Each of the camming portions 88a include a first detent 92 and a second detent 94. Referring now to Figures 2, 3 and 8-10, the operation of the locking mechanism 46 will be described. Referring initially to Figure 3, the locking mechanism 46 is shown in a locked position wherein the graspable end portion 30 is positioned within the recessed portion 26 (Figure 2). The second retaining pin 66 rests at the lowermost portions 86b of the camming portions 86a. At the lowermost portions 86b on the camming surfaces 86a, the biasing force of the first spring 52 causes the retaining pin 66 to be urged to a point of maximum downward travel thus disposing the outermost end portion 72 of the locking pin 50 within the aperture 44. With brief reference to Figure 8, when the actuating member 32 is in the locked position, the upper ends 74a of the arm portions 74 are each drawn into an associated one of the first detents 92 in response to the biasing force of the second spring 54 against the annular retaining member 56 and retaining pin 58. The biasing force of the second spring 54 causes the clamping surfaces 64 to be held tightly against the inwardly extending shoulder portions 42. Accordingly, it should be appreciated that the locking mechanism 46 of the present invention effects a "double" locking action. The first component of this locking action is the locking pin 50 which engages within one of the apertures 44 when the actuating member 32 is in the locked position. The second component of the locking action is provided by the clamping member 48 which further helps to secure the bracket member 20 very securely to the support member 12 by its clamping action Thus dual locking action provides extremely secure locking of the bracket member 20 to the support member 12. Referring now to figures 2, 9 and 10, as the actuating member 32 is moved rotatably to its unlocked position, wherein the manually graspable end portion 30 extends generally perpendicular to the inner surface 28 of the bracket member 20, the second retaining pin 66 is urged upwardly as it rides to uppermost portions 86c of the camming surfaces 86a. Thus, as the actuating member 32 is rotated, the second retaining pin 66 is urged upwardly relative to the bottom wall 38 of the channel member 36 against the biasing force of the first spring 52. At the same time that the actuating member 32 is being moved into the unlocked position shown in Figure 9, the upper ends 74a of the arm portions 74 of the clamping member 48 are urged downwardly toward the bottom wall 38 as they move from out of the first detents 92, along camming portions 88a. When the graspable end portion 30 is extending approximately perpendicular to the inside surface 28 of the bracket member 20, the upper end portions 74a of the arm portions 74 are engaged within the second detents 94. Thus, movement of the upper end portions 74a along the camming portions 88a forces the arm portions 74 downwardly relative to the bottom portion 38, thus causing the clamping portions 64 to be moved out of clamping engagement with the inwardly extending shoulder portions 42. Thus, while the locking pin 50 is being withdrawn from the aperture, the clamping member 48 is also substantially simultaneously moved away from the inwardly extending shoulder portions 42 out of clamping engagement therewith. Thus, the dual locking action provided by the locking mechanism 46 is accomplished by a single movement of the actuating member 32, while the unlocking action is similarly accomplished by a single movement of the actuating member 32. The locking mechanism 46 of the present invention thus provides extremely secure locking engagement of a bracket member within a channel member, and further a "dual" locking action. Referring briefly to Figure 12, an alternative preferred retaining member 100 of the locking mechanism 46 is shown. The embodiment 100 includes a plurality of latching portions 102 which engage a notch 104 formed in the clamping member 48, and a top cover portion 103. The retaining member 100 is installed by simply pressing it over the clamping member 48. Figures 13 and 14 illustrate yet another preferred alternative retaining member 106. Retaining member 106 also has a plurality of latching portions 108, a central portion 110 which retains the spring 52, and a retainer helper member 109. The latching portions 108 similarly engage the notch 112 formed in the clamping member 48. Figure 15 illustrates yet another alternative preferred retaining member 114. Retaining member 114 also includes a plurality of arm portions 116, a central portion 118 and an edge portion 120 for maintaining it concentrically with the spring 54.

Claims: A vehicle article carrier (10) comprising: a pair of support members (12) for extending longitudinally along and fixed securement to an outer body vehicle surface (14); a bracket member (20) disposed on at least one of said support members (12); a cross bar (22) secured to said bracket member (20) such that movement of said bracket member along said one support member (12) allows said cross bar to be adjustably positioned relative to said support members; said bracket member (20) including locking means (46) for releasably securing said bracket member to said one support member (12) at a selected position along the length of said one support member; said locking means (46) including: actuating means (32) having a manually graspable portion (30) and a first camming surface (86); and locking pin means (50); said locking pin means (50) being movable into locking engagement with said one support member (12) when said actuating means (32) is moved into a locked position; and said locking pin means (50) being movable out of said locking engagement with said one support member (12) by said first camming surface (86) when said actuating means (32) is moved to an unlocked position; characterised in that: said actuating means (32) has a second camming surface (88); said locking means (46) further comprises clamping member means (48); said clamping member means (48) is movable into clamping engagement with said one support member (12) when said actuating means (32) is moved to said locked position; and said clamping member means (48) is moveable out of said clamping engagement with said one support member (12) by said second camming surface (88) when said actuating means (32) is moved to said unlocked position. The vehicle article carrier of claim 1, further comprising: first biasing means (52) for biasing said locking pin means (50) into said locking engagement when said actuating means (32) is moved to said locked position; and second biasing means (54) for biasing said clamping member means (48) into said clamping engagement when said actuating means (32) is moved into said locked position. The vehicle article carrier of claim 2, wherein said clamping member means (48) comprises a bore (70) extending therethrough; wherein said first biasing means (52) is disposed within said bore; and wherein said locking pin means (50) is disposed slidably within said bore (70) and urged outwardly of said bore by said first biasing means (52). The vehicle article carrier of any one of the preceding claims, wherein said bracket member (20) includes a foot portion adapted to guide said bracket member along said one support member (12). A vehicle article carrier as claimed in claim 1, wherein each of said support members (12) includes a longitudinally extending channel (34); said locking pin means (50) is operably associated with said actuating means (32) and is movable generally linearly into and out of engagement with apertures (44) in said channel of said one support member (12); first biasing means (52) are arranged to urge said locking pin means (50) into said locking engagement with said one support member (12); said clamping member means (48) is operably associated with said actuating means (32) and is disposed at least partially within said channel (34) of said one support member (12); second biasing means (54) are arranged to urge said clamping member means (48) into engagement with said one support member (12), said clamping member means (48) being cooperable with said second camming surface (88) such that movement of said actuating means (32) towards said disengaged position causes said clamping member means (48) to be urged out of clamping engagement with said one support member (12) and movement of said actuating means into said locked position causes said clamping member means to be clampingly urged into engagement with at least one wall portion of said channel (34) of said one support member. The apparatus of claim 5, wherein said clamping member means (48) includes a concentrically disposed bore (70); and wherein said locking pin means (50) is slidably disposed within said bore (70). The apparatus of claim 5 or claim 6, further comprising: an annular retaining member (56) disposed about an upper end portion of said clamping member means (48); and a retaining pin (58) for maintaining said annular retaining member (56) to said clamping member means against the biasing force of said second biasing means (54). The apparatus of claim 7 when appendant to claim 6, wherein said first biasing means (52) is disposed concentrically within said bore (70); wherein said clamping member means (48) includes a longitudinal, elongated slot (68) formed therein; and wherein said apparatus further comprises a second retaining pin (66) disposed within said longitudinal elongated slot (68) and cooperable with said first camming surface (86) such that movement of said actuating means (32) into said unlocked position causes said second retaining pin (66) to be urged away from said channel of said one support member by movement over said first camming surface and against the biasing force of said first biasing means (52). A vehicle article carrier as claimed in claim 1, wherein: said support members (12) each include a channel (34) formed therein, said channel including a channel member (36) having a pair of inwardly extending shoulder portions (42) and a bottom wall portion (38) having a plurality of spaced apart apertures (44) extending generally linearly along a major portion of the length of said channel; said bracket member (20) is slidably and adjustably disposed on said one support member (12); said actuating means (32) has a main body portion (80) having at least said first camming surface (86) and at least said second camming surface (88), and a bore (84) disposed concentrically within said main body portion; said clamping member means (48) is concentrically disposed within said main body portion (80) and adapted to move generally linearly relative to said main body portion to a clamped position in which it is engaged with said inwardly extending shoulder portions (42); said locking pin means (50) is disposed concentrically within a bore (70) formed in said clamping member means (48) and is movable longitudinally therein; first biasing means (52) are disposed concentrically within said bore (70) for biasing said locking pin means (50) such that an outermost end portion thereof extends into locking engagement with a selected one of said apertures (44) in said bottom wall of said channel member (36) of said one support member (12) when said locking pin means (50) is positioned over said selected aperture; retaining means (56) are provided for retaining said locking pin means (50) at least partially within said clamping member means (48) against the biasing force of said first biasing means (52); second biasing means (54) are provided for biasing said clamping member means (48) into said clamping engagement with said inwardly extending shoulder portions (42) when said actuating means (32) is in said locked position; said first camming surface (86) causing said retaining means (56) to urge said locking pin means (50) linearly away from said bottom wall portion (38) of said channel member (36) when said manually graspable portion (30) of said actuating means (32) is moved from said locked position to said unlocked position; and said second camming surface (88) causing said clamping member means (48) to be urged away from said inwardly extending shoulder portions (42) and therefore out of locking engagement with said channel member (36) when said manually graspable portion (30) is moved from said locked position to said unlocked position. The apparatus of claim 9, wherein said clamping member means (48) comprises at least one arm portion (74) for engaging said second camming surface (88) when said actuating means (32) is rotated. The apparatus of claim 10, wherein said bracket member (20) includes a foot portion for guiding said, bracket member along said channel member (36); and wherein said foot portion includes a guide portion for cooperating with said arm portion (74) of said clamping member means (48) to prevent said clamping member means from rotating relative to said bracket member. The apparatus of claim 11, wherein said second camming surface (88) includes a first pair of detents (92) for helping to hold said actuating means (32) in said locked position when said manually graspable portion (30) is moved into said locked position; and wherein said second camming surface includes a second pair of detents (94) positioned approximately 90 degrees from said first pair of detents (92) for cooperating with said arm portion (74) of said clamping member mans (48) to maintain said actuating means in said unlocked position when said manually graspable portion is moved into said unlocked position.

Inventors: AFTANAS JEFFREY M, CUCHERAN JOHN STEPHEN, AFTANAS, JEFFREY M., CUCHERAN, JOHN STEPHEN
Applicants: JAC PRODUCTS INC, JAC PRODUCTS, INC.
Application year: 1994
Main classification: B60R9
IPC codes: B60R9